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Question 2 Find the missing number that makes the expression a perfect square. a. r2 x +16 b. x2 + X – 25

Question 2 Find The Missing Number That Makes The Expression A Perfect Square A R2 X 16 B X2 X 25 class=

Answer :

(a)

Given data:

The given expression is x^2 -.......x +16.

The first expression can be written as,

[tex]\begin{gathered} x^2-.\ldots..x+16=x^2-2(x)(4)+(4)^2 \\ =x^2-8x+16 \\ =(x-4)^2 \end{gathered}[/tex]

Thus, the unknown value is 8.

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